Physics

Chapter 6 Mechanical Properties of Matter || PCTB New Physics Book Solution

 MCQS Questions   6.1 A wire is stretched by a weight \( w \). If the diameter of the wire is reduced to half of its previous value, the extension will become: (a) one half (b) double (c) one fourth (d) four times Correct Option: (d) four times Reason: Extension is inversely proportional to the square…

Chapter 1 Physical Quantities and Measurements || PCTB New Physics Book Solution

MCQs 1.1 The instrument that is most suitable for measuring the thickness of a few sheets of cardboard is: (a) metre rule (b) measuring tape (c) Vernier Callipers (d) micrometer screw gauge Correct Answer: (d) micrometer screw gauge Reason: A micrometer screw gauge is specifically designed for precise measurements of small thicknesses, such as sheets…